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- University
- Politecnico di Milano
- Degree programme
- Aerospace Engineering
- Subject
- Fondamenti di Sperimentazione Aerospaziale
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- Notes · Complete set
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Fondamenti di Sperimentazione AerospazialeComplete set
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Sperimentazione aerospaziale Formulario PONTEDI WHEATSTONE TRAZIONE " V= VsK (Era- Eza+[3A- EGA)= 1 3 4Va = VsK |Era+VEratEssa+Vega)= VsK (1+v)Ea 4 = Rc, 23 2 4 = Vs K (1 +V) n 2 EA FLESSIONE- MEZZO PONTE p21 Rz V= VsK (Est- Ezf)= VsK EF= 1 4 2 -t vs ×. e = vsk mx ci 2 2 C-Ixx .- 4 Rc, 23 FLESSIONE DIFFERENZIALE 21 R2 m F V= VS K (Elf- Ezft [3-5- Ec, F)= 4 -+ 4 1 3 2 sz si = Vs K (2Efs, - 2Efgz) =" " . .- d = VsK MxIy2 EIxx TORSIONE • V= Vs K {1-Et)- E, + (- Et)- 1-Et)}= 421 R2 -+ = - UsK [+ = ^ } 2 vs < .- Rc, 23 mz • Et = MzR sin/20) ZGJT ALIASING DIMOSTRAZIONE ALIASING p= 0 : fapp= 9-fc= fz NO aliasing { P= intir) f = 1- = ptq ppari: fapp= 9- Fc=/f-Aliasing 2 fc2 9= mod/r) PDispari: fapp= (1-9)fa=/fAliasing 2 FILTRO ANTI - ALIASING - 6.(ORDINEfiltro )dbottava • dBfiltro = |- 20. (ordine Filtro )dbDECADE o MDecadi = dBat notaire = dBat dBfiltro DBFILTRO dbat dBfiltro ft. 2 Ottave • fa= | dbat ft. yo dbfiltro DECADI • BEST PRACTISE: ft= 1, 3 fint attenuare Di ^ in PIÙIL PEGGIORRUMORE 4 • CRITERIO PER EVITARE ALIASING i f-c , 2f-~ (c-AKAOING • RISOLUZIONE in FREQUENZA: f-= 2f-Max = f-c = 1 = 1 N n n t Ta ss e non SI HA LEAKAGING SE TOSS= KTi , DOVE Tisono i PERIODI DELLE ARMONICHE DEL SEGNALE
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